Printing machine



Feb. 4, 1936. s. FURMAN PRINTING MACHINE Fiiled March 30, 1952 7Sheets-Sheet 1 4 INVENTOR Samuel Tu 7 an & %%w

ATT oRNEY Feb. 4, 1936. s, FURMAN PRINTING MACHINE '7 Sheets-Sheet 2Filed March 30, 1932 u u u u INVENTOR Samuel Tarman %u I ATTORNEY I Feb.4, 1936'.

s. FURMAN PRINTING MACHINE Filed March 30, 1932 7 Sheets-Sheet 3 INVENTOR zl Fir-mE a ATTORN-EY Feb. 4, 1936. s. FURMAN PRINTING MACHINEFiled March 30, 1932 7 Sheets-Sheet 4 Inventor Samuel T'urman Feb. 4,1936. s. FURMAN 2,029,996

PRINTING MACHINE Filed March so, 1932 7 Sheets-Sheet 5 lnuencor AttorneyFeb. 4, 1936. s. FURMAN PRINTING MACHINE Filed March so, 1932 7Sheets-Sheet 6 EV K 8 SH .5 mg @Q 0 Samuel F'urrnan Feb. 4, 1936.

S. FURM AN PRINTING MACHINE Filed March 30, 1932 7 Sheets-Sheet 7Patented Feb. 4, 1936 2,029,996 rnm rmo MACHINE Samuel Furman,Worcester, Mass., United States Envelope Company,

assignor to Springfield,

Mass, a corporation of Maine Application March 30, 1932, Serial No.601,945 25 Claims. (01. 101-228) shown in relation to the feedingmechanism. of a bag-forming machine in conjunction with, which theprinting machine operates, said bag-forming machine being showndiagrammatically.

Fig. 2 is a left hand end elevation of the print- The present inventionrelates chines and particularly to machines for uniformly spacedimpressions strip or web.

to printing maprinting on a continuous In prior devices of thischaracter, the printing is efiected by passing the material to beprinted between a printing roll and a latter urging the material intopressure roll, the contact with the printing surface on the printingroll. The web moves at the same speed printing roll so that a changeas'the surface of the in the spacing of the impressions on the webinvolves a corresponding change in the size of the circumference ofwhich must printing roll, the v be equal to the spacing of successiveimpressions. Thus, in order that a single machine may accommodatedifferent spacing of impressions, it is necessary to provide a pluralityof interchangeable various sized printing rolls, each of which printssuccessive impressions on the web in accordance ference of the roll.

principal objects of the present with the circum- It is accordingly oneof the invention to provide for printing spaced impressions on acontinuous strip or web with the spacings of the impressions independentof the size of the printing roll.

Another feature the printing of a plurality of se of the inventionresides in ries of spaced im- I pressions by a plurality of printingoperations which involves passing the web successively over a pluralityof printing rolls, with said rolls in proper relation to locate theimpressions made by each of said rolls in predetermined relation to eachother.

Another feature resides in the arrangement of the printing machine forsupplying the printed web under tension from said to the feedingmechanism of printing machine another machine whichoperates upon saidweb in accordance with the spacing of the impressions thereon,

as, for

example, a machine which .forms envelopes with the printed impression onthe front thereof. This feature involves the operation of the printingmachine in" timed relation to the mechanism of the other machine and themaintenance of the printing mechanism in proper spaced relation tothefeeding mechanism of the other machine so that'the spaced printedimpressions will be properly located within the other machine.

Other and further objects and the invention will appear from taileddescription taken the following dein connection with the accompanyingdrawings. in which:-

Fig. 1 is a front elevation of a printing machine embodying theinvention. said machine being advantages ofing machine of Fig. 1.

Fig. 3 is an enlarged detail view of the mounting for one of theprinting rolls. 4 Fig. 4 is a vertical section along the line 4-4 ofFig. 2, through the printing machine.

Fig. 5 is a'diagrammatic view showing the gear and chain drives for theprinting machine.

spacing the ink Fig. 6 is a detailed view of a mechanism for transferroll from the printing roll in inoperative position. i

Fig. '7 is a view corresponding to Fig. 6 showing the mechanism inoperative position.

Fig. 8 is a detail of a portion of the mechanism shown in Figs. 6 and 7.

Fig. 9 is a detail with the mechanism for of one of the printing rollslocking said roll against rotation in one direction.

Fig. 10 is a detail ing the web through of the the printing machine.

mechanism for feed- Fig. 11 is a detail of the adjustment of one of theprinting rolls.

Fig. 12'is a plan view of the printed web before it enters the feedingmechanism of the bagforming machine, showing the sions in predeterminedprinted impresrelation to cuts in said web made by said bag-formingmachine.

Fig. 13 is a plan view of a completed bag into which the web is formed.I

Fig. 14 is a view corresponding to Fig. 1 showing the printing machinein a modified form in conjunction with a machine which moves the webintermittently in the formation of a ,bag.

Fig. 15 is a detail of the mechanism for maintaining the web under tension.

Fig. 16 is a view corresponding to Fig. 12 showing the web in themachine bf Fig. 14.

Fig. 1'7 is a plan view similar to Fig. 13 showing a completed envelopeformed by the machine of Fig. 14.

Like reference characters refer to like parts throughout the drawings.

The invention is disclosed in connection with a bag-forming machinewhich operates on the web after the printing operation constant speedthe web is fed at a and through which by constant speed rolls, theactuation of which will be more clearly pointed out hereinafter.

Referring first to Fig. l, theweb l, which is of any suitable material,is drawn from a ro the printing machine.

11 2 over a feed roll 3 in From the feed roll, the

web is carried over the surface of a plurality o1- printing rolls 5 and6, around an idler 1 which maintains the web tight, and over idlers 8and I U to the rolls II in the bag-forming machine, said rolls H beingdriven at a constant speed from the main drive shaft |2 of saidbag-forming machine.

The printing machine will be first described. Referring to Fig. 2, themachine embodies spaced frame members l3 which provide bearings for theseveral mechanisms by" which the printing operation is procured. As bestshown. in Fig. 5, the main drive shaft 4 is journaled in the framemembers and is actuated in timed relation to the rolls II by a chain l5from the drive shaft |2 of the bag-forming machine. The drive shaft |4carries a gear l6 adjacent one end thereof which meshes with an idlergear l the latter engaging a gear |8 equal in size to the gear l6 andcarried by the end of the printing roll shaft 6', whereby each rotationof the drive shaft M procures a single rotation of the printing roll 6.The feed roll 3 and the printing roll 5 which are the same diameter asthe roll 6, as shown in Fig. 4, are all rotated at the same rate ofspeed by a chain 23, Fig. 5, which passes over sprockets 2| and 22 onthe printing roll shafts 5 and 6' and a sprocket 23 on the end of thefeed roll shaft 3', whereby the surface speeds of the feed roll 3 andthe printing rolls 5 and 6 are all equal. An idler sprocket 24 islocated between the sprockets 2| and 23 and engages the chain 20 to keepsaid chain tight.

The feed roll 3 is arranged to feed a predetermined length of web to theprinting rolls 5 and 3 for each rotation of said roll 3, although thelength of the web fed is entirely independent of the circumference ofthe roll. Referring to Figs. 1 and 2, the feed roll shaft 3 is journaledat its opposite ends in the frame members l3 and a transverse rod 25 isjournaled in the frame members l3 in parallel relation to the roll 3 andcarries onrits forward end thereof an arm 26 which is clamped againstmovement on said rod by a clamping screw 21. Spaced arms 28 and 30 whichare secured against rotation on the rod 25 between the frame members 3provide alined bearings at their outer ends for a movable rotating roll33 which extends parallel to and is arranged to engage the surface ofthe feed roll 3. The roll 33 is actuated at the same surface speed asthe roll 3 by means of intermeshing gears 34 and 35 secured to the feedroll shaft 3' and said moving roll shaft 33' respectively. The webpasses between the feed roll 3 and the movable roll 33, and engagementbetween said rolls as the movable roll 33 is brought into contact withthe surface of the feed roll 3 procures a positive feeding movement ofthe web toward the printingrolls, at the speed of said printing rolls.

The movable roll 33 is brought into contact with the surface of the feedroll 3 during a portion only of each rotation of said feed roll toprocure a positive feed during the printing of each impression. As shownin Fig. 1, the main I drive shaft l4 carries on its forward end anadjustable cam 38 which is engaged by a roller 31 mounted on a stud 38on the lower end of a connecting rod 39, the upper end of said rod beingattached to the arm 26. The lower end of the connecting rod 39 beyondthe roller 31 provides parallel arms 43 and 4| which extend on oppositesides of the drive shaft to support the roller 31 in proper position onthe cam 36. As the roller 31 passes onto the raised po tion of the cam36, the rod 39 is urged upwardly, turn- 3 ing the transverse rod 25counterclockwise, and

pressing the movable roll 33 into contact with the surface of the feedroll 3, to procure movement of the web at the sped of the feed roll 3.As best shown in Figs. 4 and 9, a small longitudinal groove 42 isprovided in'the feed roll 3 and is positioned so that the edge of saidgroove is engaged bythe movable roll 33 as said movable roll 33 isbrought into engagement with the driving roll, thereby procuring apositive movement of the .web.

The printing machine in the position of Fig. 1 is at the start of thefeeding movement of the web through the printing machine just as theroll 31 has been raised by the cam 36, thereby bringing the movable roll"33 into engagement with the feed roll 3 at which time the edge ofgroove 42 is directly beneath said roll 33. From this point, the webmoves at the speed of the feed roll 3 until the cam 36 is rotated tobring the depressed portion of the cam beneath the roller 31 whichseparates the feed roll 3 and the roll 33 to allow movement of the feedroll 3 relative to the web As the drive shaft l4 rotates at the samerate of speed as the feed roll 3, the positive feeding movement of theweb occurs through a portion only of each rotation of the drive shaftwhile the movable roll is in engagement with said'feed roll.

The length of web to be fed at each rotation of the feed roll 3 ment ofthe cam 36 which, as best shown in Figs. 1 and 2, comprises a pair ofsimilarly shaped disks 43 and 44, each having projecting portionsthereon and rotatable relative to one another to bring the projectingportions more or less in.

alinement to shorten or lengthen the projecting portion of the cam 36.

The roller 31 extends over the entire width of the two disks 43 and 44,which are locked in adjusted position by a clamping bolt/45 extendingthrough an arcuate slot 46 in the disk 43 and'being screw threaded inthe disk 44, Fig. l. The engagement between the feed roll 3 and themovableroll 33 is determined by adjustment of the length of theconnecting rod 39 or by'adjustment of the location of the arm 26relative to the transverse rod 25. a

From the feed roll 3, the web is carried to the printing roll 5 which,in the construction shown, is arranged for gravure printing. Referringto Figs. 1 and 2, the ends of the shaft 5' for the gravure printing roll5 are journaled in bearings provided by the frame members l3 and atransverse rod 50 is mounted in hearings in the frame members l3 inparallel relation thereto. Said rod 50 has arms 5| and 52 securedthereto between said frame members l3, and the ends of said arms 5| and52 carry ball bearing members is determined by the adjust- 53, see Fig.10, which support a rod 55' having 60 a pressure roll 55 parallel toroll 5 mounted thereon, whereby said roll 55 is free to rotate in thearms 5| and 52. As shown in Figs. 2 and 10, the rod 50 also carries aprojecting arm 51 secured thereto with the outer end of said arm 65connected by an adjustable link 58 to an arm 60 mounted on thetransverse rod 25 and movable therewith. Thus, as the movable roll 33 isbrought into contact with the feed roll 3, the

pressure roll 55 is brought into contact with the 70 83 carries an arm62, said members being slidable longitudinally relative to one'anotherand being secured in adjusted position by a clamping bolt 63 tendsthrough a slot 64 in the arm 6I, and which is tightened to hold saidmembers 6| and 62 member I carried by a rod 1 I, the ends of which aresupported by the frame members I3. The doctor blade 69 is normally'heldin engagement with the gravure roll at a predetermined pressure by aroller I2 carried by an arm I3 on the rod II, said roller engaging amember I4 which provides a plane surface parallel to the rod II, themember I4 being resiliently supported in position by springs I5 beneathsaid member, said springs I5 and the member 14 being carried by abracket I6 secured to one of the frame members I3, Fig. 9. I

The doctor blade is reciprocated longitudinally over the surface of thegravure roll to avoid uneven wear on said roll. As best shown in Figs. 2and 5, the feed roll shaft 3' carries a gear 'I'I meshing with a gear I8carried on a stub shaft 19 journaled in one of the frame members I3. Asecond gear 80' on the shaft I9 meshes with a gear 8| rotatable on thefeed roll shaft 3, said gear 8| carrying a cylindrical cam 82. A shaft84 secured thereto and the end of said arm supports a roller 85 incontact with the surface of the cam 82, the roller 85 being maintainedin contact with said cam by a spring 86. The lower end of a second arm81, secured on the shaft 83, engages a grooved collar 88 on the doctorrod H so that as the roll shaft 3' is rotated, the cam 82 rocks theshaft 83, whereby the doctor blade is reciprocated slowly over thesurface of the gravure roll.

The gravure roll support is arranged to permit a change of rolls whenthe impressions on the web are to be changed. To this end, as best shownin Figs. 2 and 3, the gravure roll shaft 5 instead of being directlyjournaled in the frame members is carried by supporting members 90 and9| which are journaled in the frame members l3. The support 90, whichcarries on the outer end the sprocket 2I, has an axial bore 92 in theinner end thereof, with a portion of the bore defined by a removable cap93 secured in position by screws 94, removal of the cap permittingremoval of the end of the shaft 5' from the bore 92. As the shaft 5 isclamped against rotation by the cap 93, the rotation of the gravure roll5 issecured through rotation of the support 90 by the sprocket 2I.

The support 9| has a cylindrical recess 95-axially therein in which asleeve 96 is slidable, and the latter, when positioned in the left handend of the recess 95, is arranged to receive and support the right handend of the shaft 5', with said sleeve locked in this position by a setscrew 91. A cut-out portion 98 in the support 9|, provides an opening inthe side of the recess 95 through which the end of the shaft 5 may bewithdrawn upon release of the set screw 91, and axial movement of thesleeve 96 to the right out of engagement with the shaft 5'. Upon removalwhich exof the cap 93, said shaft 5 may be carried slightly to theright, as indicated in Fig. 3, to withdraw the left hand end of theshaft from the end of the bore 92, after which the roll shaft 5' and theroll 5 thereon may be withdrawn from the members 90 and 9 I. Thus theconstruction shown provides for accurate centralization of the shaft 5'relative to the axes of the supportingmembers 90 and 9| and permitsreplacement of the gravure roll by a similar roll having a differentengrav-v ing thereon.

The gravure roll 5. is prevented from counterclockwise rotation whilethe doctor blade is in contact with said roll by mechanism most clearlyshown in Fig. 9. Referring to Figs. 3 andv 9, one of the frame membersI3 has an annular ring I00 secured thereto, said ring surrounding thesupporting member 90 for the gravure roll shaft 5'. The ring I00 isprovided with a substantially vertical slot IOI which is tangential tothe cylindrical surface of the supporting member 90 at a pointsubstantially in the horizontal plane of the gravure roll axis. A rolleror cylindrical pin I02 is received in the slot IOI in parallel relationto the axis of the supporting member 90, and

said pin is normally urged by gravity against the surface of thesupporting member 90 and wedges between said member and the side of theslot to lock said member 90 against counterclockwise rotation.

The doctor blade may be rotated to inoperative position after theremoval of the bracket I6 carrying the member 14 which supports saidblade in position, and, hen said blade moves to inoperative position,the pin I02 is withdrawn from locking position. Referring to Fig. 9, asthe doctor blade is swung to inoperative position, a cam I03 secured tothe rod II and rotatable with the doctor blade, engages and elevates theend of a lever I04, which carries a roller I05 in engagement with saidcam I03. The opposite end of said lever I04 is connected by a link I06to a lever I01 which, as in the case of the lever I04, is pivoted on theframe member I3. The free end of the lever I01 extends beneath the pinI02 so that as the cam I03 elevates the roller I05, the cylindrical pinI02 is raised out of engagement with the supporting member 90, therebypermitting the gravure roll 5 to be turned counterclockwise, the doctorblade being out of contact with said roll. A spring I08 holds the leverI01 out of engagement with the pin I02 when the doctor blade is inengagement with the gravure roll.

Following the gravure printing operation, which has been described, theweb is carried to a second printing mechanism which procures a secondprinting operation on the web. In the construction shown, the secondprinting operation is done by the printing roll 6 which, as shown inFig. 1, is journaled in bearings provided by the frame members I3. Thisroll 6, Fig. 4, carries on the surface thereof a flexible member IIItightly secured to the roll with relief printing surfaces II2 secured toand extending beyond the member III to provide for relief printing onthe web. A pressure roll II3 parallel to the printing roll 6 is freelyrotatable on a shaft II4, the ends of which are supported in the framemembers I3,

and urges the web I into contact with the printing surfaces on theprinting roll 6. Since the printing roll 6 and the pressure roll II3 arein fixed relation to each other during'the operation of the machine, thesurface .of the printing roll is out of engagement with the surface ofthe ,Referring to Figs. 1 and 11, a bell crank lever' I I5 is pivotallymounted at one end on one of the frame members I3 and a similar bellcrank lever, not shown, is pivoted in alike manner on.the other framemember I3, said levers providing bearings for opposite ends of theprinting roll shaft 6. As the position and adjustment of the levers isthe same for both, only the lever H5 will be described. A depending armon the lever II5 has a horizontal slot II 6 which receives an eccentricsleeve II'I carried on a stud bolt II8 on the frame I3. flange H9 bywhich said sleeve is turned on the bolt I I8, to rock said lever II5about itspivotal support on the frame, to vary the spacing between theprinting roll 6 and the pressure roll H3, said sleeve being clamped inadjusted position by tightening the bolt I I8,

Ink or printing fluid is transferred to the printing surfaces on therelief printing roll from a fountain roll I20, the lower-surface ofwhich extends within a tank or pan I2I supported onthe frame in themanner disclosed with reference to tank 65. The surface of the fountainroll I is in engagement with a transfer roll I22 which engages theprinting surfaces II2 of the printing roll. As best shown in Fig. 5, thefountain and transfer rolls I 20 and I22 are driven in unison with theprinting roll 3. The printing roll shaft 6 carries the gear I8 whichmeshes with a gear I24 on the transfer roll shaft I22 for moving saidtransfer roll at the same surface speed as the printing roll, and a gearI25 on the fountain roll shaft I20 meshes with the gear I24 on thetransfer roll to drive the fountain roll I20 at a surface speed slightlyless than the surface speed of the transfer roll to procure a creepingaction between said rolls which maintains the surface of the transferroll free from accumulations of dried printing material.

When the machine is brought to rest, the transfer roll is manuallyspaced from the-printing roll and the fountain roll. Referring now toFigs.\6 and 7, the fountain roll shaft I20, which is journaled inthe-frame members I3, carries eccentric sleeves I26 located between saidframe members with one sleeve adjacent each of said frame mem-.

bers. Only one of the sleeves I26'is shown since the mechanismassociated therewith is duplicated for either end of the shaft I20. Eacheccentric sleeve I25 is carried by a disk I2I which is urged clockwiseby a spring I23, the latter being secured at one end to the frame memberI3, said disk being held in adjusted position by an adjusting bolt I29.in a lug I30 on said disk, said bolt engaging a portion of the framemember I3 to limit the clockwise rotation. Each eccentric sleeve I26provides a support for an upwardly extending link I3I in which the endof the transfer roll shaft I22 is journaled. Adjustment of the bolt I29turns the eccentric sleeve and thereby raises or lowers the link I3! tomove the transfer roll toward or away from the fountain roll.

The link I3I on each end of the fountain roll carries at the upper endthereof a roller I 32 which is engaged by a latch I33, the latter beingpivotally mounted on the printing roll shaft 6, and engage The sleeveIII has an annular ment between said latch I33 and the roller I32 movesthe link I3I clockwise to space the transfer roll from the printingroll. Movement of the latch I33 into engagement with the roller I32 isprocured by manual downward movement of an arm I34 which carries ahandle I35 on the end thereof and is attached to a transverse shaft I33supported in the'frame I3 to which shaft 9. second arm I31 is secured,the end of the latter arm I31 being' connected by a link I 38 to thelatch I33. Depression'of the handle I35 moves the latch I33 downwardlyinto engagement with the roller I32. In this position the arm I34 islocked by a pivoted lockingmember I39 on the frame member I3, saidmember I39 engaging the arm I34 in its lower position:

Referring to Fig. 8, the link I3I is urged toward the printing roll 6normally to support the transfer roll in contact with the printingsurfaces on said printing roll 6 by a spring I40 which engages at oneend a lug I4I mounted on a stud I42 on the frame member I 3 with theopposite end of said spring engaging the upper end of the link I3I. Thelug I M carries an overlying flange I42 which is provided with a slotI43 receiving a pin I44 on the end of the link I3I to limit the rockingmovement of the link I3I about the eccentric sleeve I26. The transferroll I 22 is aecordingly held in contact with the printing surface ofthe printing roll 6 when the latch I 33 is out of engagement with theroller I32.

The link I38 carries a pawl I45 "pivotally mounted thereon, said pawlnormally depending in engagement'with a cut-out portion I46 of the diskI21 so that, as said link I38 is moved downto supply the web at aconstant speed to a machine operating in conjunction therewith. As bestshown in Figs. 1 and 4, the idler or tension roll .'I

over which the web I is carried is journaled in the ends of arms I47carried by a shaft I48, the ends of which are mounted in the framemembers I3. A spring I49 engages a pin I50 on said shaft I48 and tendsto turn said shaft clockwise, thereby maintaining a tension on the webas it is fed through the printing machine and taking up the slack in theweb, since the web moves at a faster rate during'the printing operationthan the cons t speed at which the web is carried away from the machine.

In order that successive impressions on the web shall be properly spacedapart, a fixed distance is established from the feed roll 3 to theconstant speed rolls I I between which the web moves at a uniform speed,said feed roll 3 and the printing mechanism being driven in timedrelation to the constant speed roll as above stated. To this end thetension roll 1 is returned to a predetermined position at the beginningof each successive printing operation. Referring now to Fig. 4, theshaft I48 carries an arm I50 secured to a connecting rod I5I whichcarries on its opposite end a roll I52 engaging a groove I53 ina cam I54v which is rotatable with the drive shaft I4, thereby procuringmovement of the tension roll I in predetermined relation to the rotationof the drive shaft.

spacing between the At the start of the feeding operation of the webthrough the printing-machine, the roll I52 is in a portion of the grooveI53, the spacing of which corresponds to the diameter of the roll,whereby the connecting rod is held against movement and the tension.roll is accordingly positively located in the same position t thebeginning of each feeding operation. As soon as the positive feedingmovement of the web begins, the roll I52 enters a portion of the camgroove I53 which is substantially wider radially than the diameter ofthe roll and the tension roll I is free to move in response to thespring I49 to keep the web tight. When the cam I54 has completed thegreater part of its revolution, the roll I53 again enters a narrowingportion. of the groove which brings the tension roll I into the samepredetermined relation which it occupied at the beginning of thepreceding feeding movement. The tension roll is also'positively locatedat the beginning of the feeding movement by an adjusting bolt I55 whichis carried by an arm I56 secured to the shaft I48.

The constant speed rolls II which engage the web positively at all timescarry a length of web therebetween, for each rotation of the drive--shaft I2, equal to the desired spacing of the impressions on the web,and the roll 3 is made to feed substantially the same length of webthrough the printing machine by adjustment of the cam 36. Accordingly,between eachsuccessive positive feeding movement of the roll 3 the webcomes to rest in the printing machine, although it is being drawn awayfrom said printing machine at a constant speed, since the tension roll 1permits the web to be drawn away from said printing machine. It isdesirable, however, to adjust the cam 36 so that the length of web fedby the positive feeding movement of the roll 3 is slightly less than thedesired spacing of the impressions on'said web.- Thus, betweensuccesslve feeding movements of the roll 3, the web is moved slowlythrough the printing machine by the rolls II (the web then being free topass through said printing machine by reason of the feed roll 3 and themovable roll 33 and also between the printing rolls and the pressurerolls therefor), thereby preventing the web from stopping entirely andavoiding the for starting the web excessive tension necessary from rest.

When the length of web fed by the roll 3 is substantially equal to thelength of web fed by the rolls II, the arrangement of the machine causesthe web to be in motion through the printing .machine at the start ofthe feeding movement by the roll 3. As above pointed out, thenarrowingportion of the groove I53 in the cam I54 positively returns the tensionroll 'I to its initial position and this positive return movement is sotimed that the rolls II begin to draw the web through the printingmachine to start said web in motion before. said roll I reaches initialposition. thatthe adjustment of the cam 36 is such that the length ofweb fed through the printing machine is equal to or less than the lengthof web passing between. the constant speed rolls II,

whereby the spacing of the rolls in the printing machine to permit freemovement of the web therethrough permits control of the rolls I I. Inthis manner, the constant speed rolls II move the web through theprinting machine to establish the desired length of web, even though thelength ofthc web fed a sprock It will be apparent the web to beunderthe,

through the printing machine is shorter, and thus any accumulated errorin the different lengths is avoided.

It will be noted that the length of the web fed by the printing machineis varied by adjustment of the cam 36, this single adjustment takingcare of any desired change in length of the web within the limits of themachine. of the entire printing machine is involved except theadjustment of the individual printing rolls toward or away from eachother to vary the location of the separate impressions relative to oneanother on the web. In this manner, the printing machine may be quicklyadjusted for spacing the successive impressions on the web a greater orless distance apart.

The relative position of the gravure and relief printing impressions onthe web is varied by adjustment of the printing rolls 5 and 6 toward oraway from each other. As best shown in Figs. 1 and 2, the frame membersI3 each comprise a main frame portion I51 which supports thereliefprinting mechanism, the tension roll I and the feed roll 3, and amovable frame portion I58 No other adj ustment 'of web fed by theseparate feeding mechanisms which supports the gravure printingmechanism.

I58 is connected at its upper I5I of the frame by a bolt The movableportion end to the main portion I59 which extends through a longitudinalslot I60 provided in the main portion I51. The lower edge of the movableportion I58 is slidable along a way I6I provided by the machine and abolt I62 extends through a slot I63 in the lower end of the movableportion I58. The opposite movable portions I58 of the opposite framemembers I3 are caused to move together by turning movement of whichcarry the gravure printing mechanism being locked in adjusted positionby tightening of the bolts I59 and I62.

The drive for the feed roll 3 and the printing I rolls 5 and 6, abovedisclosed, is not interfered with by the adjustment of the gravuremecha-- nism since the idler 24 is carried on the movable portion I 58and has its periphery in vertical alinement with the sprocket 2I on thegravure roll shaft 5 and in horizontal alinement with the 23 on the feedroll shaft 3' so that regardl ss of the position of the gravure roll,the chain is maintained at the desired tension.

The above described printing machine is arranged tooperate inconjunction with a suitable bag-forming machine diagrammatically shownin Fig. ,1 which operates upon the web I to form a bag of the type shownin Fig. 13. Fig. 12 shows the web I with the spaced impressions I68formed by the gravure printing roll 5 and similarly spaced impressions6. The web I is provided with opposed notches IIII corresponding inspacing to the spacing of the impressions I68 and I69, said notchesbeing located between successive printed impressions. The web in thisform has the opposite edges I II of the web folded over onto the centralportion I12 I69 formedby the relief printing roll- I 69 may be properlylocated on the front of the,

finished bag, the printing mechanism is driven in timed relation to themechanism which formsthe web into the bag as above pointed out.Referring now to Fig. I, which illustrates the bag-forming 1 machinediagrammatically, the constant speed rolls I I between which the web Iis fed are driven from the drive shaft I2 for the bag-forming machinethrough an intermediate idler gear I14 which meshes with a gear I14 onthe shaft I2 and a gear I15 on the shaft I I' for the lower constantspeed feed roll I I. The size of the gear I14 is variable to change therate of speed of said constant speed rolls for different lengths ofbags, in order that the length of web passing between said rolls i IIfor each rotation of the drive shaft 52 shall be equal to the desiredspacing of the printed impressions. As shown in Fig. 1, the drive shaftsi2 and id each carry similarly sized sprockets I15 over which the chainI passes, so that the drive shafts rotate at the same rate of speed.

After the web i leaves the printing machine and is carried over theidler 8, it passes downwardly over the idler roll i d which presses alongitudinal edge of said web against a gumming roll I16 for theapplication of adhesive material to said edge for securing oppositeedges of said web together in the formation of the bag. Following thegumming operation; the notches I are formed in the opposite sides of theweb by rotary choppers I11 carried on shafts I18 (only one chopper andshaft being shown) which are actuated in timed relation to the driveshaft I2- in any suitable manner, said choppers cooperating withstationary blades I19 to remove one pair of opposed notches I10 for eachrotation of said drive shaft. From the choppers I11, the web is drawn,by the rolls II, through a feeding mechanism I80 comprising a series ofstationary folding blades of the usual construction which fold the weblongitudinally and forms the reentrant creases in the opposite edges ofthe bag and the rolls II beyond the folding mechanism I80 press thefolded web flat to cause the overlapping edges of the web to adheretogether. Beyond the rolls II the web is passed between spaced foldingand cutting rolls I8 I, which sever the web along lines I13 and fold thebottom of the bag. The upper roll' I 8I carries a folding blade I 82which engages the web in the position of the bottom fold of the bag andpresses the web adjacent said fold into a gripper I83 carried by thelower roll I8 I, the web being thereafter severed by a knife I84 in theupper roll I8I which cuts the web along the line I13 by engagement witha block I85 in the lower roll I8 I, thereby severing a substantiallycompleted bag from the end ofthe web.' The rolls I8I are driven in timedrelation to the drive shaft I2 by a chain I86 which engages sprockets,not shown, on the drive shaft I2 and on the shaft I8I' for the lowerroll I8I, saidsprockets being equal in size so that one rotation of thedrive shaft I 2 procures 8. correspond?- ing rotation of the rolls I8I,said folding and cutting operation occurring once for each rotation ofthe drive shaft I2 and in timed relation thereto.

The proper location of the spaced impressions on the finished bag isdependent upon the positions of the choppers I11 and the rolls I 3|relative to the printed impressions on the printing rolls5 and I5. Theconstant speed rolls II, as above stated, are in predetermined timedrelation to the choppers I11 and also to the rolls Ill by reason of theconnections from the drive shaft I2, and the impressions on the web areproperly located on the bag by variation of the timed relation of theprinting operation and the operations of the bag-forming machine. Thechange in timing to position the impressions is procured by shifting thesprocket I angularly thereby varying the timeon the drive shaft I4, ofthe printing operation relative to the operation of the bag-formingmachine, and thus locating printed impressions in desired position onthe web in relation to the notches formed by the choppers I11-and to thebottom fold formed by the rolls NH.

The operation of the printing machine in conjunction with thebag-forming machine which will be clear from the above description willbe briefly outlined. In the position of the printing machine shown inFig. l, the positive movement of the web through the printing machinehas been initiated by the cam 36 on the drive shaft I4 which has urgedthe moving roll 33 into contact with the feed roll 3. Prior to thismovement of the roll 33 the web is drawn slowly over the roll 3 inresponse to the pull exerted on the web by the constant speed rolls IIwith the tension roll 1-moving counter-clockwise as the web is drawnthrough the rolls II. Just as the moving roll 33 engages the feedingroll 3, the tension roll 1 is brought to the predetermined position ofFig. 1, to establish a fixed length of web between the constant speedrolls I I and the feed roll 3. From this position, the web I roll 3 atthe surface speed of the printing rolls and in contact with the printingsurface thereof. the pressure roll 55 having been moved into engagementwith the surface of the printing'roll 5 at the beginning of thispositive movement of the web. As the printing rolls 5 and 5 are rotatedcontinuously and at the same speed as the feed roll 3, the printingsurfaces II2 on the printing roll 3 are brought into contact with thepressure roll II3 during the positive movement of the web by the feedroll 3, and printing by these surfaces and by the gravure roll 5 occurwithout blurringof the impressions. The web during this feeding movementmoves faster than it is drawn between'the constant speed rolls II sionmade on the web by the roll 5, the relative position of the impressionsbeing varied by movement of the rolls 5 and- 6 toward or away from eachother, as above disclosed.

is fed by the feed,

The positive feeding movement of the web 4 continues with the slacktaken up by the roll 1 until the roller 31 engages the depressed portionof the cam 36 when the moving roll 33 is separated from the driving roll3 and the pressure roll 55 separated from the gravure roll 5, thepressure roll II3 being then out of contact with the printing surfaceII! of the printing roll 6. The roll 3 is provided with a brake I 36 andfollowing the i junction with separation of the feed roll 3 and the roll33, the.

rate of movement of the web is materially'decreased by the brake,whereby the idler roll 1 starts its return movement to the position ofFig. 1, the web being drawn from the printing machine by the rolls II.This return movement of roll 1 occurs at a predetermined rate since theroll I52 is in the narrow'portion of the cam groove I53 and the returnrate is such that the rolls II draw the web I slowly through theprinting machine to avoid complete stopping of the movement of the webthrough said machine. Just as the printing machine finishs one completeprinting operation, the machine reaches the position shown in Fig; 1,with tension roll 1 in positively located position for the beginning ofa subsequent operation which is carried through in the manner abovedescribed.

The spacing of the impressions on theweb is thus determined by themovement of the web between the rolls II which, as above pointed out,move the web a distance equal to the spacing of successive impressionson the web for each rotation'of the drive-.shaft .-I2 and accordinglyfor each rotation" of the"drivei'shaft I4 in the printing machine. Afterthe'printing operation, the web is notched by the choppers I11 andthereafter folded, in the formationof a bag, by the folding mechanismI80 which turns in the sides and by the end-folding mechanism on therolls I9I. As above pointed out, if the printed impressions are notproperly located on the front of the bag, as shown in Fig. 13, thetiming ofthe printing machine relative to the drive shaft of thebag-forming machine is varied by adjustment of the sprocket I15 so thatthe position ofthe printed impressions relative to the choppers I11 isvaried and the printed impressions are properly located on the finished*bag.

In the modification shown in Fig. 14, the printing machine correspondssubstantially in construction to the printing machine above disclosedand the same reference characters are applied to this printing machinewhich operates in conthe intermittently actuated feed rolls of abag-forming machine of the type disclosed, for example, in the NovickPatent No.

1,691,027, granted November 6, 1928. In this arrangement of the printingmachine, however, the roll 1 remains stationary and operates merely asan idler roll, with other mechanism, as will hereinafter appear,operating to maintain the web under tension. In this modification, theweb I passes from the tension roll 1 of the printing machine around anidler I81 and over a second idler I88, both of said idlers, as well assaid roll 1, being fixed in position, and thence-around idlers I90 andI9l, the latter being movable, to the feed rolls I92 of the bag-formingmachine between which the web is intermittently fed.

As best shown in Fig. 15, the drive shaft I93 of the bag-forming machinecarries a disk I94 having a radially adjustable pin I95 on which an armI96 is pivotally mounted. The arm I96 has a rack I91 formed thereonwhich engages with a pinion I98 mounted for rotation on the lower feedroll shaft I92, said pinion carrying a pawl 200, which engages with aratchet 20I secured to the shaft I92. With the drive shaft I93 rotatingclockwise, the shaft I92 and accordingly the feed rolls I92 are rotatedclockwise during half of each revolution. of the drive shaft I93 and thepinion I98 rotates on the shaft I92 during the other half of therevolution of said drive shaft.

In order to take up the slack and to maintain the web under tensionbetween the printing machine and the intermittently actuated feed rollsI92, the idler roll I9I, above described, is mounted for free swingingmovement. Said idler roll I9I is carried by arms 202 secured to theshaft I90 on which the idler roll-I90 isrotatably mounted. The weight ofthe idler roll I9I and the arms 202tend to swing said roll clockwiseabout the shaft I90 to maintain the web I under tension and a pin 203beneath one of the arms 202 prevents excessive downward movement of saidroll IOI, said pin positively locating said roll I9I at the beginning ofthe feeding movement of the web between the rolls I92. The shaft I90carries a depending arm 204 pivotally mounted thereon, said arm having aconnecting rod 205 connected thereto, the other end of the rod 205supporting a roller 206 in engagement with a cam 201 on the drive shaftI93. The rod 205 beyond the roll 206 provides spaced fingers 20.8 whichextend on opposite sides of the shaft I93 to support the roller 206 inproper relation to the cam. A-spring 2 I0 normally urges the rod 205toward the right to maintain'the roll 206 in engagement with the cam 201at all times. A pin 2 on an arm 2I2 integral with one of the arms 202 isengaged by the arm 204 as the latter moves to the left to procurepositive downward movement of the roll I9I, said roll being free to moveupwardly as the arm 204 moves to the right under the influence of thespring 2 I0.

The bag-forming machine is driven intimed relation to the printingmachine by a chain 2! which passes over sprockets 2I4 and 2I5 on thedrive shaft I93 of the bag-forming machine and the drive shaft I4 of theprinting machine respectively, said sprockets being equal in size sothat a single rotation of the drive shaft I93 procures a correspondingrotation of the drive shaft I4. The machines are so timed that theintermittently actuated feed rolls I92 begin the feeding operationatsubstantially the same time that the feeding movement of the web occursin the printing machine, as will be apparent from a consideration ofFig. 14, in which the printing machine is shown just at the beginningofthe feeding operation, and the actuating mechanism for theintermittently actuated feed rolls I92 of the bag-forming machine. is ina position to start the movement of said intermittently actuated rolls.

From a consideration of Figs. 14 and 15, which represent the parts inthe same relative positions,

the printing machine is just beg nning the posi- I tive movement of theweb I through said machine with the tension roll 1 positively located toprocure. a predetermined length of web between the feed roll 3 and theintermittently actuated rolls I92 of the bag-forming machine. At thesame time, the roll I9I is positively located, as most clearly shown inFig. 15, since the pin 2 is in engagement with the arm 204 so thatupward movement of the roller I9I, except as governed by the cam 201 onthe drive shaft I93, is prevented. As each rotation of the drive shaftI93 of the bag-forming machine moves a length o-f web I between therolls I92 equal to the length of web necessary for the formation of acomplete bag, the spacing of the impressions formed by the printingmachine will be equal to the length of web necessary for the formationof the completed bag.

In order to locate the printed impressions 22I being spaced inclockwise, the web is fed through the rolls I87 is carried by arms 2I6mounted on a shaft 2II carried by the frame 2; which provides thesupport for the roll 2 from which the web is drawn, and the position ofthe roll I81 is varied by swinging said roll about the shaft 2I'I andlocking the roll in adjusted position, thereby varying the length of webbetween the printing rolls 5 and 6 and the intermittently actuated rollsI92 of the bag-forming machine.

Referring now to Figs. 16 and 17 which show the type of bag formed onthis machine, the web I has spaced impressions 220 formed by the grayureroll 5, each rotation of the gravure roll providing opposed impressionstransversely in alinement on the web and similarly the web hastransversely alined impressions 22I formed by the relief printing roll6,

accordance with the gravure impressions 220. After the web has passedbetween the intermittently actuated feed rolls I92,

the web is cut longitudinally along the line 222 to.

define two strips, each of which is formed into bags in the bag-formingmachine. After the web is out along the line 222, the outer edges ofeach strip are folded along the lines 223 and the strip is subsequentlyfolded transversely along the lines 224 to form the completed bag ofFig. 17 With the printed impressions 220 and 22I on the front sidethereof, each completed'bag being cut from the Web along the lines 225,the formation of such a bag being fully described in the above notedNovick patent.

,The operation of the machine of Figs. 14 and 15, which will be clearfrom the above description will be briefly summarized. The drive shaftsI4 and I93 are in the relative angular positions shown. With the driveshaft Win the position for the beginning of the positive feeding of theweb I through the printing machine, the drive shaft I93 is in a positionto initiate the rotation of the rolls I9 as shown", to procure a feeding movement of the web between said rblls. In this position, the lengthof web between the feed roll 3 and the intermittently actuated rolls I92 is positively determined by the positive location of the roll I9Iagainst the pin 203 in response to the rotation of the cam 20'! whichhas its high point directly beneath the roll 206 when the machine. is inthe position shown, the roll 'I being fixed in position. As the driveshaft I93 rotates I92, the roll I 9| moving upwardly from its lowermostposition to allow the web to pass between said rolls. The upwardmovement of the roll I9I is successive relief impressions possible sincethe high point of the cam 20T- passes from beneath the roll 206 as thefeeding movement of-the r olls I92 is initiated. Continued feedingmovement ofthe web through the rolls I92 continues to raise the roller I9I until the end of the feeding movement at which time the roll I 95begins its downward movement under the influence of gravity to maintainthe web tight as it is fed from the printing machine. It will be notedthat the cam 36 .of the printing machine is so arranged that the web isfed through at least one-half of each rotation of the drive shaft, thussaid web is always fed through the printing'machine at a slower ratethan the feeding movement between the rolls I92. The roll I 91 acts tomaintain the web under tension by its weight and also to establish apredetermined length of web between the feed roll 3 and the rolls I92 atthe beginning of each feeding movement of the web, said roll being.positively located As the drive shaft I93 approaches the position shownin Fig. 14, the cam 20I urges the roller I 9I downwardly so that at thebeginning of each successive feeding movement of the web, said roller isin its lowermost position in engagement with the pin 203 to establishthe predetermined length of web between said machines. "The properpositioning of the roll I9I accordingly procures the predeterminedspacings of the impressions on the web in accordance with the length ofweb passed between the rolls I92 at each actuation thereof. In thismodification, as in the preceding modification, the free movement of theweb through the printing ma chine between successive printing operationsprevents excessive tension on the web between said machines to breaksaid web, as a result of the by the cam 201;

printing machine feeding too short a length of web, said rolls I92acting as master rolls. Thus by the provision of the positive downwardmovement of the roll I9I,'any inaccuracy in the relative lengths of webfed through the printing machine and between the rolls I92 iscompensated for, and by adjustment of the cam. 36 so that the length ofweb fed through the printing ma- "chine shall be equal to or slightlyless than the length of web fed between the rolls I92, the rolls I92will procure the necessary movement of the web through the printingmachine to compensate for the inaccuracy of the adjustment of the feedforthe printing machine.

From the foregoing, it will be apparent that the printing machineprovides for printing spaced impressions on a continuous web with thespacing of the impressions independent of the circumference of theprinting rolls and that the print ing machine is arranged to supply theweb to another machine in conjunction with which the printing machineoperates with the printed i'mpressions on said Web properly locatedrelative to the operative mechanism of the auxiliary machine. Theprinting machine provides for printing a plurality of series of spacedimpressions on the same continuous web with one series of impressions inproper spaced relation to those of the other series. In operating theprinting machine in conjunction with an auxiliary machine; said machinesare driven in timed relation in order that the spaced impressions shallbe properly located relative to the operations performed on the web bythe auxiliary machine with provision for taking up the slack andcompensating for the different rates of travel of the web in the twomachines so that the rates .of movement of the web through the printingmachine may be dissimilar to the rates of movement of the web throughthe auxiliary machine.

I claim",

1. In a machine for printing spaced impressions on a continuous web bygravure printing, a gravure printing roll, a pressure roll 'to press theweb against the printing roll, means for feeding a predetermined lengthof web between said rolls for each rotation of the print roll, saidfeeding means comprising a driving roll having the same surface speed asthe printing roll, and a movable roll engaging said-driving roll andpressing the web against said driving roll duringa portion only of eachrotation of said driving roll for advancing the web between the printingand pressure rolls -at the same speed as the rolls, and meansforrelative movement between said web and the surface of the printing roll.

2. In a machine for printing spaced impressions on a continuous web, aprinting roll, a pres sure roll to press the web against the printingroll, means for feeding a predetermined length of web between said rollsfor each rotation of the print roll, mechanism operative beyond theprinting operation for positively moving the web ata constant speed, andmeans for maintaining said web under tension between said feeding meansand said constant speed means, and for establishing a predeterminedlength of web between the feeding means and the positively moving meansat the beginning of each feeding movement by said feeding means.

3. In a machine for printing spaced impressions on a continuous web, aprinting roll, a pressure roll to press the web against the printingroll, means for feeding a predetermined length of web between said rollsfor each rotation of the print roll, mechanism for procuring anoperation on said web after the printing operation, said mechanismcarrying the web from said printing roll at a predetermined rate, andmeans for maintaining said web under tension between said feeding meansand said mechanism, and for establishing a predetermined length of webbetween said mechanism and the feeding means at the beginning of eachfeeding operation.

4. In a machine for printing spaced impressions on a continuous web, aplurality of spaced printing mechanisms, each mechanism comprising aprinting roll, and a pressure roll for each printing roll for pressingthe web into contact with the printing surface of said rolls, means forfeeding a predetermined length of web between the printing rolls andpressure rolls for each rotation of said printing rolls, with the lengthof web independent of the circumference of the rolls, means forsupporting said pressure rolls for movement of the surfaces thereofrelative to the surfaces of the printing rolls, means for maintainingsaid web under tension and for taking up the slack between said printingrolls, and means to vary the spacing between said printing mechanisms inaccordance with the spacing of the impressions on said'web.

5. In a machine for printing spaced impressions on a continuous web, aprinting roll, a pressure roll for pressing the web against the printingroll, means for feeding a. predetermined length of web between saidrolls for each rotation of the print roll, with the length of webindependent of the circumference of the printing roll, means forprocuring movement of said web at a constant speed after the printingoperation, and means for maintaining said web under tension between saidfeeding means and the means for moving the web, and for establishing apredetermined length of web between said constant speed-moving means andsaid feeding means at the beginning of each printing operation.

6. In a machine for printing spaced impressions on a continuous web, aprinting roll, a pressure roll for pressing the web against the printingsurface of the printing roll, means for feeding a predetermined lengthof web between said rolls for each rotation of the printing roll and atthe surface speed of the printing roll, means operable after theprinting operation for procuring operations on predetermined lengths ofsaid web in accordance with the spacing of the impressions thereon,including means for positively advancing said web at a predeterminedrate,

means for actuating the feeding means in timed relation to thelast-mentioned means, and means for establishing a predetermineddistance between the positively-advancing means and the feeding meansbetween successive printing operations while the feeding means areinoperative.

7. In a machine for printing spaced impressions on a continuous web, aprinting roll, a pressure roll for pressing theweb against the printingsurface of the printing roll, means providing for feeding apredetermined length of web between said rolls for each rotation of theprinting roll and providing for movement of the web relative theretobetween successive feeding operations, means operable after the printingoperation for moving the web at a constant speed, means for actuatingsaid moving means in unison with said feeding means, said feeding meansprocuring a faster movement of the web during the feeding operation thanthe constant speed movement of the web after the printing operation, andmeans for maintaining said web under tension and for taking up the slackbetween said feeding :means and said constant speed means.

8. In a machine for printing spaced impressions on a continuous web, aprinting roll, a pressure roll for pressing the web against the printingsurface of the printing roll, means providing for feeding apredetermined length of web between said rolls for each rotation of theprinting roll and providing for movement of the web relative theretobetween successive feeding operations, said means comprising a feed rollmoving at a constant speed and a movable roll engaging said driven rollduring a. portion only of each rotation of said driving roll, constantspeed means operable beyond the printing operation for moving the web ata constant speed, means for maintaining said web under tension betweensaid feeding means and said moving means, and means for establishing apredetermined length of web'between said constant speed means and saidfeeding means at the initiation of each feeding movement.

9. In a machine for printing spaced impressions on a continuous web, aplurality of spaced printing rolls, a pressure roll for each printingroll for pressing the web into contact with the printing surfaces ofsaid rolls, means for feeding a predetermined length of web between theprinting rolls and the pressure rolls for each rotation of said printingrolls, the length of web being independent of the length of thecircumference of said rolls, means for moving said printing rolls towardor away from each other to provide for different spacing betweensuccessive impressions on said web, and means for actuating saidprinting rolls in unison with the surfaces of said rolls moving at thesame rate of speed.

10. In a machine for printing spaced impressions on a continuous web, aprinting roll, a pressure roll to press the web against the printingroll, means for feeding a predetermined length of web between said rollsfor each rotation of the print roll, said feeding means comprising adriving roll and means engaging said driving roll and pressing the webagainst said roll during a portion only of each rotation of said drivingroll, means operable after the printing operation for moving said web,said moving means and said driving roll being actuated in unison, andmeans for maintaining said web under tension between said feeding meansand said moving means and for establishing a predetermined length ofwebbetween said moving means and print roll, said feeding means comprisinga driving roll and means engaging said driving roll and pressing the webagainst said roll during a portion only of each rotation of said drivingroll,

means operable after the printing operation for intermittently actuatingsaid Web in accordance with the spacing of the impressions on said web,and means for maintaining said web under tension between said feedingmeans and said moving means and for establishing a predetermined lengthof web between said feeding means and said moving means betweensuccessive feeding operations.

12. The combination with means for operating on predetermined lengths ofa continuous web, of before said first means becomes operative inaccordance with the lengths of web to be operated on, said printingmeans comprising a printing roll, a pressure roll for pressing the webagainst the printing roll, means for feeding a predetermined length ofWeb corresponding to the spacing of the impressions between said rollsfor each rotation of the printing roll, means for spacing the surface ofthe pressure roll from the printing roll between successive impressionson said web, means for maintaining said web under tension between saidfeeding means and said first-mentioned nieans, and means for operatingsaid feeding means in timed relation to said first-mentioned means,whereby each impression on the web is in predetermined relationto thelength of web operated upon by said first-mentioned means.

13. The combination with a mechanism for operating upon a continuousweb, said mechanism having a master roller over which said web iscarried at a constant speed, of a printing mechanism for printing spacedimpressions on said web before it reaches said master roller, saidprinting mechanism comprising a printingroll, a pressure roll,.means forseparating said printing roll and said pressure roll between successiveimpressions .on said web, means for feeding said web between said rolls,comprising a feed roll and a movable roll pressing said web against thefeed roll during a portion only of each rotation of the feed roll, andmeans to maintain the web under tension between said printing mechanismand the master roller.

14. The combination with a mechanism for operating upon a continuousweb, said mechanism having an intermittently actuated master roller overwhich said web is carried, of a printing mechanism for printing spacedimpressions on said web before it reaches said master roller, saidprinting mechanism comprising a printing roll, a pressure roll, meansfor separating said printing roll and said pressure roll betweensuccessive impressions on said web, means for feeding said web betweensaid rolls, comprisingfa feed roll and a movable roll pressing said web'against the feed roll during a. portion only of each rotation of thefeed roll, and means to maintain the web under tension between saidprinting device and the master roller.

15. The combination with a mechanism for operating upon a continuousweb, said mechanism having a master roller over which said web-is meansfor printing impressions on said web 2,029,996 said feeding meansbetween successive feeding opcarried at a constant speed, of a printingmechanism for printing spaced impressions on said web before it reachessaid master roller, said printing mechanism. comprising a printing roll,

a pressure roll, means for separating said printing roll and'saidpressure roll between successive impressions on said web, means forfeeding said web between said rolls, comprising a feed roll and amovable roll pressing said web against the feed roll during a portiononly of each rotation of the feed roll, and means to maintain the webunder tension between said printing device and the master roller and toestablish a predetermined length of web between the feed roll and themaster roller at the beginning of each feeding movement of the web bysaid feed roll and movable roll.

16. The combination with a mechanism for operating upon a continuousweb, said mechanism having an intermittently actuated master roller overwhich said web is carried, of a printing mechanism for printing spacedimpressions on said web before it reaches said master roller, saidprinting mechanism comprising a printing roll, a pressure roll, nieansfor separating said printing roll and said pressure rollbetweensuccessive impressions on said web, means for feeding said webbetween said rolls, comprising a feed roll and a movable roll pressingsaid web against the feed roll during a portion only of each rotation ofthe feed roll, and means to maintain the web under tension between saidprinting device and the master roller, and to establish a predeterminedlength of web between the feed roll and the master roll at the beginningof the feeding movement of the web by said feed roll.

17. The combination with a mechanism for operating upon a continuousweb, said mechanism having an intermittently actuated master roller overwhich said web is carried, of a printing mechweb between said rolls,comprising a feed roll and a movable roll pressing said web against thefeed rollduring a portion only of each rotation of the feed roll, meansto deliver the web from the printing machine at a substantially constantspeed, and means to establish a predetermined impressions on said web,means for feeding said I length of web between the feed roll and themaster roll at the beginning of the feeding movement of the web by saidfeed roll.

0?) In a machine for printing spaced impressi s on a continuous web, aprint roll, a pressure roll to press the web into contact with theprinting surface of the print roll, means for feeding a predeterminedlength of web between said rolls for each rotation of said print roll,means for separating said pressure roll and said print roll betweensuccessive impressions on said web, and means involving a singleadjustment for varyin the spacing of the impressions on the web. 19. Ina machine for printing spaced impressions on a continuous web, a printroll, a pressure roll to press the web into contact with the printingsurface of the print roll, means for feeding a predetermined length ofweb between said rolls for each rotation of said print roll, and meansfor spacing said pressure roll from said print roll between successiveimpressions on said web, and means involving a single adjustment forvarying the spacing of the impressions on said web by varying the lengthof web fed by said feeding means.

20. In a machine for printing spaced impressions on a continuous web, aplurality of spaced printing rolls, a pressure roll for each printingroll for pressing the web into contact with the printing surface of saidrolls, means for feeding a predetermined length of web between theprinting rolls and pressure rolls for each rotation thereof, with thelength of web independent of the circumference of the rolls, means forsupporting said pressure rolls for movement of the surfaces thereofrelative to the surfaces of the printing rolls, means for moving saidweb at a predetermined rate after it passes between said rolls, meansfor maintaining said web under tension between said feeding means andsaid moving means, and means involving a single adjustment for varyingthe spacing of the impressions on said web.

21. The combination with a mechanism for operating upon a continuousweb, saidmechanism having a master roller over which said web is carriedat a predetermined rate, of a printing mechanism for printing spacedimpressions on said web before it reaches said master roller, saidprinting mechanism comprising a printing roll and a pressure roll; andmeans for feeding said web between said rolls, comprising a feed rolland a movable roll pressing said web against the feed roll during aportion only of each rotation of said roll, and means to maintain theweb under tension between said printing mechanism and the master roller,and to establish a predetermined length of web between the feed roll andthe master roller at the beginning of each feeding movement of the webby said feed roll.

22. In a machine for printing spaced impressions on a continuous web,the combination with a gravure printing roll, and a pressure roll forpressing the web against the printing roll, of means for feeding apredetermined length of web between said rolls for each rotation of theprinting roll and at the surface speed of the printing roll, and meansfor spacing the surface of the pressure roll from the printing rollbetween successive printing operations while the feeding means isinoperative.

23. In a machine for printing spaced impressions on a continuous web, aprinting roll, a pressure roll for pressing the web against the printingsurface of the printing roll, means for feeding a predetermined lengthof web between said rolls for each rotation of the printing roll, meansoperable on said web after the printing operation for positivelyadvancing the web at a predetermined rate, means for establishing apredetermined length of web between the web-advancing means and thefeeding means between successive printing operations, and meansproviding for movement of said web relative to the feeding means whilesaid length-establishing means is operative.

24. In a machine for printing spaced impressions on a continuous web, aprinting mechanism, means for feeding a predetermined length of webthrough said printing mechanism for each printing operation, meansoperable on said web after the printing operation for positivelyadvancing the web at a predetermined rate, means for establishing apredetermined length of web between the web-advancing means and thefeeding means between successive printing operations, andmeans toprovide for free movement of the web through the printing mechanism andfeeding means during the operation of said length-establishing means.

25. In a. machine for printing spaced impressions on a continuous web, aprinting mechanism, and means for feeding a predetermined length of webthrough said printing mechanism for each printing operation, said meanscomprising a feeding roll rotatable at the surface speed of the printingroll of the printing mechanism,

and a movable roll engageable with the feeding roll during apredetermined portion of each rotation of said feeding roll, saidfeeding roll having a notch therein, the lagging edge of said notchbeing engageable with the movable roll when the latter is moved intoengagement with the feeding roll to provide for a positive advance ofthe web positioned between said rolls.

SAMUEL FURMAN.

